Late Classicist chapel - Mniewscy family mausoleum, the last owners of Kutno and also founders of the hospital "Nowa Oberża" and the town hall. It was built (mausoleum) on the edge of the park in 1840 on a plan of a circle with a basement. The building is covered with a dome and a lantern, it has an entrance in a form of a portico with stairs. In turn, the south portico is impassable. Moreover, there was a wooden alter in the basement. The interior is decorated with classicist stucco. There was a battered slab above the entrance, originally with a Virgin Mary and baby Jesus (currently, an eagle without a crown).

The chapel began to fulfil its function in 1857 when Walentyna Mniewska was buried in the crypt and later in 1863 her husband, Feliks. In the second half of the XX century the building was devastated. The situation changed when the exhibition of the Museum of the Battle of Bzura was opened in the mausoleum in 1969 and in the underground crypts the ashes of the soldiers where placed. In the 1990s the urns with the symbolic remains of the W. and F. Mniewski returned to the chapel.

 dr J. Saramonowicz